Data processing unit



FIG. 1 is a front perspective view of a data processing unit showing our new design;

FIG. 2 is a front view of a data processing unit shown in FIG. 1;

FIG. 3 is a plan view from above of a data processing unit shown in FIG. 1; and,

FIG. 4 is a left hand side view of a data processing unit shown in FIG. 1. 

The ornamental design for a data processing unit, as shown. 